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the caps, :1sV shown in figs. 3,'4, 5, A jam-nut may be put on each screw, on the outside of the cap. Each described, separately and independently of the other.

which it goes directly to the ilier of one of the spindles D, to be sp'un, orto a spool, to be wound upon it, if

VZbe roving may be-dQubled' and drawn still fin'er at each operation before-passing to the spindle.

' e'veify alikej'vithout v.b'reakin:5,-' itat weaker parte, or producingv an undue separation of the fibres to make twists'friorirre'gularities in the'roving and 'unevenness in the yarn, which would result from unequaljstain 4in l of wool or cotton,"and even ofi sboddy-st'dckfull o enactl adjustment of the.rollers centrallyinjfront of l'the condensing-tubes, so thatjth'e axis thereof shall inter. sect the division-line or point of co-ntctfbet'weenthejtwo rollers, a'sz 'shown clearly' by'tlie'redline in fig. 4,

capacit of adjustment, as to speed, by a change of gears 1n the usual way, which will adapt thexrmotien to that These spring-bearings are placed over the journals of the drawing-rollers in m, and under the cups o o, and they are adjusted and borne down upon the journals to pres'sf-them together by set-screws, .u u, in the centre of drawing-roller is thus rendered capiablel'of adjustment to the axial line ofv the condcnsingtube, as previously In the operation of this drawing-device, the roving passes from the feed-rollers a al a2 into'the tube c, und through itbetween the rollers mm, which deliver it,"w l1en drawn by them, to the take-up vrollersi') b1 b2, from desired.

' 'An arrangement can be made with double or treble sets of drnwingfdevices, placed in one frame, by which lhe operation of drawing the-roving is subject to perfect ycontrol by the regulation and adjustment of the` mechanism previously described.I i

' It will vbe observed thati First, the drawing-rollers m m, placed in the head ofthe condensing-tube c, at right angles to ita, u xi11, ---n revolve with it, end. over end. .7 3 'I fSecond', that they'rveeeive inotion on their own axes by means of the bevel-wheels /t' k, from the bevel-wheel zon the spurnheel,g,'that takes its motion from the driving-wheel h, and, turning loosely u pon the tube, gives thedrawing-rollers au independent motion en their axes at right angles tothe axis of the tuhe. i

.The'rollers thusreceive, bydmea'nsoif their combined, conjoint, and independent in otion, va compound motionby`.\rhich the roving, when-'passingbetwecn them, is'bothdra-wn and twisted simultaneously, thevstrain extending equally. between the drawing and tbe feed-rollers upon all the fibres, and stretching the'lanient in 'drawing without simultaneoustwisting-of the roving. s f l"Third, thatlthefdrawingrollers mm, being thuscon'nected with cog-gearing,have u positive motion, whereas l the'condensing-tube'bisidrivenby 'a beltf Thus the drawing-rollers cannot slip, to' wl1icll defect, invoperationptheyfgwould'beliabl'e ifdriv'en'iby a belt. 'i

A. .V Fourth, tl 1at the speed of. thedrawingrollers isadjusted relatively to that of @condensing-tube bya chanigein-the gear-'wheels/c c, ortho driving-wheelga, in the usual way,as desired. i i "It will be-observed also-that 'the Vdrawinrg-rollersm 'in admit of exact graduation orY adjustmentofftheir. i

'eans'jofthe'doubleeacting springfbearingss separating in opposite 'directions '.n'pon the jurnal'sfof both'rollers'iby-meiins ofthe set-screwsu u working through thecaps oY l -The -e-'ect-fot` this pressure upon the rollers s'to`inzilrthem bear upon-and Abite the roving, more'or lcss, as itfpessosbetwecutheir), and thus' graduateiandregulute thefdiraughh so that the roving maybedranh according degree oi? pressurejupoxr-it. '.Th'e harder the pressureof the roll ers,fth'e greater the draught and finer-the rovingwvill b ejdrawn.' f l I y Also,V that the spri gs t t, on 'the bearings, willyield on both drawing-rollers.equallyiiiany extraneous ,matter sbould-b-introduced with-the roving between the drowinai-rollers,l and thus allowfit-to'pa'ss without .interfering-with'theiroperationandbreakingrthe filament.. l I u V I w" 'lhu s the drawingrollers'areautomaticinntheir operation, moving apart equolly'irou; the' central lineof division b'etween them en opposite sides of theaxis of thefcondensing-tube, after they have been Iadjusted or'set, whatever maybetbe irregularity 'of the.roving-passingibetween them. .-1 i QFor this reasonv'an encellent'y'arncan benadefbymy improved drawing-device of the most irregular fibres fiforeign'matters'and imperfections. Also, that the independent adjustable bearingsfon opp'ositeisides offbotlr the drawing-#rollers permit an Sheet II, whichconditionis nccessary,fa's previously-stated, in'orfclcr. that theyfshall re eandf maintain 'the roving 'n the axial -lineor centre of thefcondensing-tube, when-in operation,withoutany wabblingmotion to` the roving, the effect ofwwhichwould be irregularity inthe draught, and conseduentliliability'to.-breakage'and imperfection of tbethread that would render the "machine inoplerative,'andof noPrncti0a1=-utilityl rFhe least weer of the journals or rubbing partsof therollersfwould'prodneeirregularityin theirV action, and throwthem out of, true ift'hey were not'providedwith. themeans for thef'most acc adjustment" of4 cach i roller independently ofthe other. The tightening-screws u u compensate for wear oneitherroller,a=ieql1ircd,

Q Will be observed also thatthe'take-up rollers b b 62 should not draft? on' lthel rovi-fbg, bntbnly-freceive it after it has-passed through the'drawinglrollers. Ailn order to seeure-this'object, and'eet 4joeri-lect.raccord of movement in the operation between the `tal e-up rollers and thedrawingerollers, the'talee-uprfolli'er'sy are made o' the drawingrollers,` and enable them to receive 4the rovingas fast as delivered without-any strain upon the '.f'oose iibres of the filament. .r

I am aware that a machine for unm'aking rope or cordage, or to eifect the separation of'thcstrands of old rope, for thepurpose of reducing it to its original fibrous condition, has been previously employed, in which a nairof adjustable drnwing o .r feedrollers are placedat right angles to the axis of a hollow shai'tor'tube, und rotated by means of positive gear, whichdrawing or feed-rollers, as applied to said purpose, are set apart and have annular grooves in them, opposite each other, centrally, thc said grooves being provided with short teeth m their bottoms to bite firmly against the point ofte stationary mandrel placed Ain `line with the axis of the moes l hollow shaft, with its pointed end entering or nearly entering between the said rollers for the purpose ol' opening and unla'yin'g the strands by the entry of the mandrel into the centre of the'rope, while the rope has a rotary motion.

and I do expressly confine and limit my claims toadjustable drawing-rollers, constructed.' with straighty parallel sides o'r peripheries, ivhich bear upon each other to bite upon the roving-while it passesv between the rollers, when they are inoperation, as hereinbefore described, for the exclusive pnrposeiot twisting and 'drawing the roving, and not for the purpose of unlaying or separating the strands of old rope, cordage, or yarn loi' any kind whatever. 5 L f i And new, having minutely describcdthe construction, operation, and advantages of myiiinproved machine for twisting and drawing roving, and defined clearly its special application and' use,

What claim especially, and desire to secure by Letters Patent, .is- 1. The combination of the imlependent-ly-adjustable drawing-rollers-m m, having 'straight parallel sides, with the twisting-tube c, to the axis of which they are always maintained in central' relation, as and for the purposes herein described. v Y I 2. The combination et' the drawing-rollers m m, having straight parallel sides and adjustable independently on opposite sides of the'axial line ofthe twisting-tube c, with the positive gears k and the tube, substantiallv as and for the purpose described. 3. The pair of adjustable sliding bearings s s, connected by the springs t t respectively, and fitted-in -the l.f opposite recesses p p, in thc box n u, in combination with the drawing-rollers m m, having straight parallel infurl-idea, all *constructed and operating substantially as and for the pnrposesdescribed.,

and for the purpose specified.

The above specification of my invention signed by me, this 16th day of December, 186.7. i

. AMBROSE L. HOUGHTALING. Witnesses:

H. I. l-IoR'reN, ANDREW Pimm.

' I therefore disclaim t'ae use of said adjustable drawing or feed-rollers construetedwith their sides or -p'eripheries set apart, and having annular grooves in them provided with teeth, as and for the purpose described;

i "4. The combination of the adjustable take-up rollers `b b bz, or their equivalents, with the adjnstableaV .drawing-rollers m`m, and the twisting-tube c, arrangedla'nd operating in connection therewith, substantially as. 

